Costumed participants hug each other at the gamescom computer game fair in Cologne, Germany, Wednesday, August 5, 2015. Hundreds of thousands of visitors will enjoy one of the world's largest computer and video game events until Sunday. (Photo by Martin Meissner/AP Photo)

A costumed participant arrives at the gamescom fair in Cologne, Germany, Wednesday, August 5, 2015. (Photo by Martin Meissner/AP Photo)

Participants play the latest video games at the gamescom computer game fair in Cologne, Germany, Wednesday, August 5, 2015. (Photo by Martin Meissner/AP Photo)

A visitor wears a virtual reality glasses the Sony Morpheus at the Gamescom 2015 gaming trade fair during the media day on August 5, 2015 in Cologne, Germany. Gamescom is the world's largest digital gaming trade fair and will be open to the public from August 6-9. (Photo by Sascha Schuermann/Getty Images)

Visitors play the latest video games at the gamescom computer game fair in Cologne, Germany, Wednesday, August 5, 2015. (Photo by Martin Meissner/AP Photo)

Visitors pose with impersonators of the “Homefront: The Revolution” video game characters, published by Deep Silver, during the Gamescom fair in Cologne, Germany August 5, 2015. The Gamescom convention, Europe's largest video games trade fair, runs from August 5 to August 9. (Photo by Kai Pfaffenbach/Reuters)

A woman checks a pair of Vive Virtual Reality goggles, produced by Taiwan's HTC, during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

A cosplayer carries accessories as he leaves the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

A visitor's shirt is seen during the Gamescom fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

A visitor tests the new “Project Morpheus” 3D virtual reality glasses by Sony at the computer and video games fair Gamescom in Cologne, Germany, 05 August 2015. The trade show will run from 05 to 09 August 2015 in Cologne. (Photo by Oliver Berg/EPA)

Visitors walk near a Star Wars AT-AT at the gamescom computer game fair in Cologne, Germany, Wednesday, August 5, 2015. (Photo by Martin Meissner/AP Photo)

A costumed participant arrives at the gamescom computer game fair in Cologne, Germany, Wednesday, August 5, 2015. (Photo by Martin Meissner/AP Photo)

Costumed participants play at the gamescom computer game fair in Cologne, Germany, Wednesday, August 5, 2015. (Photo by Martin Meissner/AP Photo)

Gamers play the “StarCraft II” developed by video game producer Blizzard Entertainmen during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

Cosplayers pose for a photo during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

People pose in front of characters during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

Gamers play the “Final Fantasy XIV: Heavensward” during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

Men are dressed as soldiers to promote the video game “Call Of Duty Black Ops 3” during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

Visitors watch the trailer for “World of Warcraft” produced by Blizzard Entertainment during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

Visitors queue to play “Homefront: The Revolution”, developed by video game producer Deep Silver during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

Visitors wearing David Hasselhoff masks queue to play “Homefront: The Revolution”, developed by video game producer Deep Silver during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

A DXR Acer seat is seen during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

People pose in front of one of the characters from the “World of Warcraft” game during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

Two women, dressed as videogame Streetfighter's characters Chun-Li and Cammy (R), play the game on a Sony playstation during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

Models promote the game “Diamond Dogs” produced by Konami during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

Visitors play “Heroes of the Storm”, developed by video game producer Blizzard Entertainment during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

A cosplayer poses for a photo during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

Cosplayers dressed as maids stand in front of a costume shop during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

Gamers play “Arena of Fate” by Bulgarian video game developer Crytek Black Sea during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

Visitors wearing David Hasselhoff masks queue to play “Homefront: The Revolution”, developed by video game producer Deep Silver during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

Models promote the game “Diamond Dogs” during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

A woman shows VR goggles manufactured by hands-free 3D virtual reality system for smartphones Durivis during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

Gamers play “Diamond Dogs” produced by Konami during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)

World of Warcraft gaming booths during the Gamescom 2015 fair in Cologne, Germany August 5, 2015. (Photo by Kai Pfaffenbach/Reuters)